Since the dawn of intelligence, man has been trying to make sense of his world. Hunting, gathering, and domestication were spurred by man's desire for understanding, order, and control. Becoming comfortable with the aspects of his world was foremost, knowing the migratory patterns of his prey, the ripening of fruits and grains, and also the ways of the firmament were all crucial steps in early man's development. Before the advent of science, man was attributing the motions of the heavenly bodies to the motions of earthly bodies, seeing the stars in groups resembling bears, lions, or men, naming the friendly face of the Moon after an ancestor or god, or seeing the Milky Way band of stars as the stream of milk given from a heavenly mother to nourish the Earth.